Side-bearing car-truck.



' members of each of said bearings having ball races ,concave transversely to the direcf tion` of travel of the car, such concavity bey ingaf flatter curvature' than that of the perip e the side-bearings to tend to return the balls and the truck to their normal positions, similarly lateral shifting of the truck- Wlth respecttc the car is permitted but 1s. cu sh'` i ioned. by the inclined sides of the ball races and said inclined sides tend to return the truck to its normal 'position'. amount-of angular movement of the truck may occur without injury to the side bearings, by'reason of the' open-ended horizontal 'top races, but a dangerous degree of angu- -lar rotation of the truck is prevented bythe o cal one.

1 lower members,'said members having ball` polygonal center pin. As the Weight of the car is allcarried by the side bearings, the bolstersmay be of comparatively light con- Istruction rendering the design an economi- Although but .one specific embodiment of this invention vhasl been herein shown. and

described, it will be understood that. numerous details of the construction shown may be altered oromitted Without departing from the spirit of4 this invention as defined by the following claims.

IiClai'm: l 1'. In a car truck, the combination of truck and body bolsters vconnected together so'as to permit relative sidewise and pivotal movements, side-bearings comprising upper 'and races formed inthe' opposed faces thereof and4 concentric to the pivotal axis' -of said" holsters', and balls located in said races, both ry of the balls, wherebythe vvei-ghtof y the'car will resist the relative sidewise movement .of the bolsters and normally/,urge the sametoa centralposition, the-ball' races in 4Saidlovver membersl being 'also concave in the linear travel gf said haus ana-the bau An unusual;

races in said upper members being of uniform elevation from end to end in the line. of travel of said b alls.

,2. In a car truck, the combination oftruck `and body bolstersconnected together so as to permit relative sidewise and pivotal move'` ments,' s1de' bearings comprlsmg upper and lower members, ,said members having ball races formed in the opposed faces thereof and concentric to the'pivotal axis of said holsters, and balls located in saidraces, one

b all race concave transversely to the direction of travel, such concavity being of flatter curvature than that of the periphery of the balls, whereby the weight of the car will-.re-

-member of each of said bearings having its l sist the relative sidewise movementvof the 'holsters 'and normally urge the same to a central position, the connection of said bolsters comprislnga socket on one of said holsters, and a pin rigid on the other said .bolster and. seated in said socket, ,said'pin 'being shaped to substantially itI said socket in the .direction of the length of thecar'and having considerable clearance in a transverse direction. y

3. In a -car truck, the combination of truck.

`and body holsters connected together'r so as g to permit relative sidewise and pivotal movements, side bearings comprising upper and lower members, said -members having ball raices formed'in theopposed faces thereof and concentric to the pivotal axis ofsaid holsters, and balls located 1n said-races,- one ember of each of said bearings having its bldg race vconcave transversely to the direcntio of travel,'such.concavity being of fiatter `curvature than'that-f'the periphery of I the balls, whereby the Weight ofthe car will v resist the relative lsidewise movement of the bclstersy and normally urge thesame to a central positiom'i'the connectio'nvof'said bollsterscomprising a socket on one of said bl- Sters, :and agp'inlrlgidon the other said bol'- ster andA seated in sa1d socket,said pin being considerable clearance in a transverse direction, andl said pinhaving shoulders posi-l tioned to engage the walls of the socket and limit the angular .movement of the truck.

Signedl at 'Chicago this 22nd day of May, 191 i' shaped to substantially lit-said socket in the dlrectiorr of the length ofthe car and having los vCHARLES ril-HUNTQON.

C; R13 heraby cetled mit Wh ums correction therein thm', th@ sima@ may to i 1n he Patent ce.

islam- CL M55- 115. 

